I bought this and have never shot it. It is a Bushmaster upper(used),PRI Handguard(used) Kreiger 16" 1-7 twist barrel(new),MSTN brake(new).Badger low pro gas block(new). It also comes with a standard B/C and charging handle. All of the used parts are in A+ condition. The barrel is SS but has been KG coated black with the brake. The barrel is $550, the PRI is $300, the MSTN is $90, then if you add the complete upper and Badger gas block you get into the $1200 range to build this. SOLD